ODL version: distribution-karaf-0.4.0-Beryllium
NETCONF server: OVS 2.5 + of-config server (https://github.com/openvswitch/of-config/)

GET http://10.42.93.112:8181/restconf/operational/network-topology:network-topology/
RESPONSE:
<network-topology xmlns="urn:TBD:params:xml:ns:yang:network-topology">
<topology>
<topology-id>topology-netconf</topology-id>
<node>
<node-id>controller-config</node-id>
<connection-status xmlns="urn:opendaylight:netconf-node-topology">connected</connection-status>
<unavailable-capabilities xmlns="urn:opendaylight:netconf-node-topology">
</unavailable-capabilities>
<available-capabilities xmlns="urn:opendaylight:netconf-node-topology">
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:actor-system-provider:impl?revision=2015-10-05)actor-system-provider-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:binding?revision=2013-10-28)opendaylight-md-sal-binding</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:cluster-admin-provider?revision=2015-10-13)cluster-admin-provider</available-capability>
<available-capability>urn:ietf:params:netconf:capability:candidate:1.0</available-capability>
<available-capability>(urn:opendaylight:netconf-node-inventory?revision=2014-01-08)netconf-node-inventory</available-capability>
<available-capability>urn:ietf:params:netconf:capability:exi:1.0</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:clustering:entity-owners?revision=2015-08-04)entity-owners</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:cluster:admin?revision=2015-10-13)cluster-admin</available-capability>
<available-capability>(urn:ietf:params:xml:ns:netconf:notification:1.0?revision=2008-07-14)notifications</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:northbound:notification?revision=2015-08-06)netconf-northbound-notification</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-restconf?revision=2013-10-19)ietf-restconf</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:connector:netconf?revision=2015-08-03)odl-sal-netconf-connector-cfg</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:southbound:v12:api:impl?revision=2015-09-01)ofconfig-southbound-v12-api-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:northbound:tcp?revision=2015-04-23)netconf-northbound-tcp</available-capability>
<available-capability>(urn:opendaylight:inventory?revision=2013-08-19)opendaylight-inventory</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-inet-types?revision=2010-09-24)ietf-inet-types</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:iana-afn-safi?revision=2013-07-04)iana-afn-safi</available-capability>
<available-capability>(urn:onf:config:yang?revision=2015-02-11)of-config</available-capability>
<available-capability>(urn:opendaylight:l2:types?revision=2013-08-27)opendaylight-l2-types</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom:pingpong?revision=2014-11-07)opendaylight-pingpong-broker</available-capability>
<available-capability>(config:aaa:authn:h2:store?revision=2015-11-28)aaa-h2-store</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:mdsal:notification?revision=2015-08-03)netconf-mdsal-notification</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:ospf-topology?revision=2013-10-21)ospf-topology</available-capability>
<available-capability>(urn:opendaylight:yang:extension:yang-ext?revision=2013-07-09)yang-ext</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:threadpool:impl:fixed?revision=2013-12-01)threadpool-impl-fixed</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:binding:impl?revision=2013-10-28)opendaylight-sal-binding-broker-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netty:eventexecutor?revision=2013-11-12)netty-event-executor</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:remote?revision=2014-01-14)sal-remote</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:southbound:impl?revision=2015-09-01)ofconfig-southbound-impl</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-network-topology?revision=2015-06-08)ietf-network-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:distributed-datastore-provider?revision=2014-06-12)distributed-datastore-provider</available-capability>
<available-capability>(config:aaa:authn:idmlight?revision=2015-12-04)aaa-idmlight</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-network?revision=2015-06-08)ietf-network</available-capability>
<available-capability>(urn:ietf:params:xml:ns:netmod:notification?revision=2008-07-14)nc-notifications</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:shutdown:impl?revision=2013-12-18)shutdown-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:north:mapper?revision=2015-01-14)netconf-northbound-mapper</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig12?revision=2015-09-01)odl-ofconfig12</available-capability>
<available-capability>(http://netconfcentral.org/ns/toaster?revision=2009-11-20)toaster</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ospf-topology?revision=2013-07-12)ospf-topology</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-notifications?revision=2012-02-06)ietf-netconf-notifications</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:distributed-entity-ownership-service?revision=2015-08-10)distributed-entity-ownership-service</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:concurrent-data-broker?revision=2014-11-24)odl-concurrent-data-broker-cfg</available-capability>
<available-capability>(config:aaa:authn:netconf:plugin?revision=2015-07-15)aaa-authn-netconf-plugin</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:netconf:auth?revision=2015-07-15)netconf-auth</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:mdsal:mapper?revision=2015-01-14)netconf-mdsal-mapper</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:mdsal:monitoring?revision=2015-02-18)netconf-mdsal-monitoring</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:topology?revision=2015-09-01)odl-ofconfig-topology</available-capability>
<available-capability>urn:ietf:params:netconf:capability:notification:1.0</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:netconf?revision=2014-04-08)odl-netconf-cfg</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:core:spi:config-dom-store?revision=2014-06-17)opendaylight-config-dom-datastore</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:rpc-context?revision=2013-06-17)rpc-context</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:protocol:framework?revision=2014-03-13)protocol-framework</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-inet-types?revision=2013-07-15)ietf-inet-types</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:common?revision=2013-10-28)opendaylight-md-sal-common</available-capability>
<available-capability>(urn:opendaylight:netconf-node-topology?revision=2015-01-14)netconf-node-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:threadpool:impl:flexible?revision=2013-12-01)threadpool-impl-flexible</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:threadpool:impl?revision=2013-04-05)threadpool-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config?revision=2013-04-05)config</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:iana-if-type?revision=2014-05-08)iana-if-type</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:shutdown?revision=2013-12-18)shutdown</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:topology:shared:schema:repository?revision=2015-07-27)shared-schema-repository</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:ver12:api?revision=2015-09-01)odl-ofconfig-ver12-api</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:nt:l3-unicast-igp-topology?revision=2013-07-12)l3-unicast-igp-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:netconf:northbound?revision=2015-01-14)netconf-northbound</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:network:isis-topology?revision=2013-10-21)isis-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:core:general-entity?revision=2015-08-20)general-entity</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:netconf:northbound:impl?revision=2015-01-12)netconf-northbound-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:toaster-provider:impl?revision=2014-01-31)toaster-provider-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:northbound:ssh?revision=2015-01-14)netconf-northbound-ssh</available-capability>
<available-capability>(http://netconfcentral.org/ns/XSQL?revision=2014-06-26)XSQL</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom?revision=2013-10-28)opendaylight-md-sal-dom</available-capability>
<available-capability>(urn:sal:restconf:event:subscription?revision=2014-07-08)sal-remote-augment</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:netconf:client:dispatcher?revision=2014-04-08)odl-netconfig-client-cfg</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:northbound:notification:impl?revision=2015-08-07)netconf-northbound-notification-impl</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netty:threadgroup?revision=2013-11-07)threadgroup</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:core:spi:operational-dom-store?revision=2014-06-17)opendaylight-operational-dom-datastore</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:threadpool:impl:scheduled?revision=2013-12-01)threadpool-impl-scheduled</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:threadpool?revision=2013-04-09)threadpool</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:aaa:credential-store?revision=2015-02-26)credential-store</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netty?revision=2013-11-19)netty</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:network:ted?revision=2013-07-12)ted</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:kitchen-service:impl?revision=2014-01-31)kitchen-service-impl</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring-extension?revision=2013-12-10)ietf-netconf-monitoring-extension</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:base?revision=2015-09-01)odl-ofconfig-base</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-yang-types?revision=2010-09-24)ietf-yang-types</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:inmemory-datastore-provider?revision=2014-06-17)opendaylight-inmemory-datastore-provider</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom:impl?revision=2013-10-28)opendaylight-sal-dom-broker-impl</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:network-topology?revision=2013-10-21)network-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:types?revision=2015-09-01)odl-ofconfig-types</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:rest:connector?revision=2014-07-24)opendaylight-rest-connector</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:network:ted?revision=2013-10-21)ted</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:actor-system-provider:service?revision=2015-10-05)actor-system-provider-service</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:southbound:base:api:impl?revision=2015-09-01)ofconfig-southbound-base-api-impl</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:network-topology?revision=2013-07-12)network-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:sal:restconf:service?revision=2015-07-08)sal-restconf-service</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netty:timer?revision=2013-11-19)netty-timer</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-interfaces?revision=2014-05-08)ietf-interfaces</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:ver12:api:types?revision=2015-09-01)odl-ofconfig-ver12-api-types</available-capability>
<available-capability>(urn:ietf:params:xml:ns:netconf:base:1.0?revision=2011-06-01)ietf-netconf</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:md:sal:core:spi:entity-ownership-service?revision=2015-08-10)opendaylight-entity-ownership-service</available-capability>
<available-capability>urn:ietf:params:netconf:base:1.0</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:clustered:netconf:topology?revision=2015-11-04)clustered-netconf-topology</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:network:isis-topology?revision=2013-07-12)isis-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:config:remote-rpc-connector?revision=2014-07-07)remote-rpc-connector</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:base:types?revision=2015-09-01)odl-ofconfig-base-api-types</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:ofconfig:base:api?revision=2015-09-01)odl-ofconfig-api</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring?revision=2010-10-04)ietf-netconf-monitoring</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-yang-types?revision=2013-07-15)ietf-yang-types</available-capability>
<available-capability>(urn:TBD:params:xml:ns:yang:nt:l3-unicast-igp-topology?revision=2013-10-21)l3-unicast-igp-topology</available-capability>
<available-capability>(urn:opendaylight:params:xml:ns:yang:controller:netconf:topology?revision=2015-07-27)netconf-topology</available-capability>
<available-capability>urn:ietf:params:netconf:base:1.1</available-capability>
</available-capabilities>
<host xmlns="urn:opendaylight:netconf-node-topology">127.0.0.1</host>
<port xmlns="urn:opendaylight:netconf-node-topology">1830</port>
</node>
<node>
<node-id>ofconfig-device</node-id>
<connection-status xmlns="urn:opendaylight:netconf-node-topology">connected</connection-status>
<unavailable-capabilities xmlns="urn:opendaylight:netconf-node-topology">
<unavailable-capability>
<failure-reason>unable-to-resolve</failure-reason>
<capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring?revision=2010-10-04)ietf-netconf-monitoring</capability>
</unavailable-capability>
<unavailable-capability>
<failure-reason>unable-to-resolve</failure-reason>
<capability>(urn:ietf:params:xml:ns:netmod:notification?revision=2008-07-14)nc-notifications</capability>
</unavailable-capability>
<unavailable-capability>
<failure-reason>unable-to-resolve</failure-reason>
<capability>(urn:ietf:params:xml:ns:netconf:notification:1.0?revision=2008-07-14)notifications</capability>
</unavailable-capability>
<unavailable-capability>
<failure-reason>unable-to-resolve</failure-reason>
<capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-server?revision=2014-01-24)ietf-netconf-server</capability>
</unavailable-capability>
</unavailable-capabilities>
<available-capabilities xmlns="urn:opendaylight:netconf-node-topology">
<available-capability>urn:ietf:params:netconf:capability:interleave:1.0</available-capability>
<available-capability>urn:ietf:params:netconf:capability:candidate:1.0</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-inet-types?revision=2010-09-24)ietf-inet-types</available-capability>
<available-capability>(urn:onf:config:yang?revision=2015-02-11)of-config</available-capability>
<available-capability>urn:ietf:params:netconf:capability:rollback-on-error:1.0</available-capability>
<available-capability>(urn:ietf:params:xml:ns:netconf:base:1.0?revision=2011-03-08)ietf-netconf</available-capability>
<available-capability>urn:ietf:params:netconf:capability:validate:1.0</available-capability>
<available-capability>urn:ietf:params:netconf:capability:validate:1.1</available-capability>
<available-capability>urn:ietf:params:netconf:capability:url:1.0?scheme=scp,file</available-capability>
<available-capability>urn:ietf:params:netconf:capability:startup:1.0</available-capability>
<available-capability>urn:ietf:params:netconf:capability:notification:1.0</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-notifications?revision=2011-08-07)ietf-netconf-notifications</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults?revision=2010-06-09)ietf-netconf-with-defaults</available-capability>
<available-capability>urn:ietf:params:netconf:capability:with-defaults:1.0?basic-mode=explicit&also-supported=report-all,report-all-tagged,trim,explicit</available-capability>
<available-capability>urn:ietf:params:netconf:capability:writable-running:1.0</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-x509-cert-to-name?revision=2013-03-26)ietf-x509-cert-to-name</available-capability>
<available-capability>urn:ietf:params:netconf:base:1.0</available-capability>
<available-capability>(urn:ietf:params:xml:ns:yang:ietf-yang-types?revision=2013-07-15)ietf-yang-types</available-capability>
<available-capability>urn:ietf:params:netconf:base:1.1</available-capability>
</available-capabilities>
<host xmlns="urn:opendaylight:netconf-node-topology">10.42.93.112</host>
<port xmlns="urn:opendaylight:netconf-node-topology">830</port>
</node>
</topology>
<topology>
<topology-id>ofconfig-capable:1</topology-id>
</topology>
<topology>
<topology-id>ofconfig-logical:1</topology-id>
</topology>
</network-topology>

we can not see any subnode when topology-id equals ofconfig-capable:1 or ofconfig-logical:1.